1311001320323 has 2 divisors, whose sum is σ = 1311001320324. Its totient is φ = 1311001320322.

The previous prime is 1311001320287. The next prime is 1311001320337. The reversal of 1311001320323 is 3230231001131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311001320323 - 2⁸ = 1311001320067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311001320295 and 1311001320304.

It is not a weakly prime, because it can be changed into another prime (1311001320023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655500660161 + 655500660162.

It is an arithmetic number, because the mean of its divisors is an integer number (655500660162).

Almost surely, 2^{1311001320323} is an apocalyptic number.

1311001320323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311001320323 is an equidigital number, since it uses as much as digits as its factorization.

1311001320323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1311001320323 its reverse (3230231001131), we get a palindrome (4541232321454).

The spelling of 1311001320323 in words is "one trillion, three hundred eleven billion, one million, three hundred twenty thousand, three hundred twenty-three".